Abstract

This paper presents a wideband circular microstrip antenna designed for mobile phones to meet the increasing demand for antennas that support multiple communication generations, including 2G, 3G, 4G, and 5G. The proposed antenna operates within a frequency range of 1.15 GHz to 6.5 GHz, effectively covering the various communication bands across these generations. It demonstrates a gain of up to -6.2 dB, an efficiency of 90%, a voltage standing wave ratio (VSWR) below 1.5, and a return loss (S11) reaching -40 dB, with a bandwidth of 5.35 GHz. The antenna, designed on an FR4 substrate with dimensions of 68 × 83 × 1.6 mm³, offers reliable performance across wide frequency ranges.

References

[1] S. A. Shandal, Y. S. Mezaal, M. F. Mosleh, and M. A. Kadim, “Miniaturized wideband microstrip antenna for recent wireless applications,” Adv. Electromagn., vol. 7, no. 5, pp. 7–13, 2018, doi: 10.7716/aem.v7i5.806.

[2] M. Aboud Kadhim, M. F. Mosleh, and S. A. Shandal, “Wideband Square Sierpinski Fractal Microstrip Patch Antenna for Various Wireless Applications,” IOP Conf. Ser. Mater. Sci. Eng., vol. 518, no. 4, 2019, doi: 10.1088/1757-899X/518/4/042001.

[3] N. M. Awad and M. K. Abdelazeez, “Multislot microstrip antenna for ultra-wide band applications,” J. King Saud Univ. - Eng. Sci., vol. 30, no. 1, pp. 38–45, 2018, doi: 10.1016/j.jksues.2015.12.003.

[4] A. A. Hamzah and H. Bayomi, Text steganography with high embedding capacity using arabic calligraphy, vol. 1073. 2020. doi: 10.1007/978-3-030-33582-3_13.

[5] B. Chauhan, S. Vijay, and S. C. Gupta, “Millimeter-Wave Mobile Communications Microstrip Antenna for 5G - A Future Antenna,” Int. J. Comput. Appl., vol. 99, no. 19, pp. 15–18, 2014, doi: 10.5120/17481-8303.

[6] W. An, Y. Li, H. Fu, J. Ma, W. Chen, and B. Feng, “Low-Profile and Wideband Microstrip Antenna with Stable Gain for 5G Wireless Applications,” IEEE Antennas Wirel. Propag. Lett., vol. 17, no. 4, pp. 621–624, 2018, doi: 10.1109/LAWP.2018.2806369.

[7] S. Sun et al., “Investigation of Prediction Accuracy, Sensitivity, and Parameter Stability of Large-Scale Propagation Path Loss Models for 5G Wireless Communications,” IEEE Trans. Veh. Technol., vol. 65, no. 5, pp. 2843–2860, 2016, doi: 10.1109/TVT.2016.2543139.

[8] Y. La Elo, F. Y. Zulkifli, and E. T. Rahardjo, “Design of wideband microstrip antenna with parasitic element for 4G/LTE application,” QiR 2017 - 2017 15th Int. Conf. Qual. Res. Int. Symp. Electr. Comput. Eng., vol. 2017-December, pp. 110–113, 2017, doi: 10.1109/QIR.2017.8168463.

[9] Z. D. Zaharis et al., “Exponential Log-Periodic Antenna Design Using Improved Particle Swarm Optimization with Velocity Mutation,” IEEE Trans. Magn., vol. 53, no. 6, pp. 1–4, 2017, doi: 10.1109/TMAG.2017.2660061.

[10] N. Ojaroudi Parchin, H. Jahanbakhsh Basherlou, and R. A. Abd-Alhameed, “Design of Multi-Mode Antenna Array for Use in Next-Generation Mobile Handsets,” Sensors (Basel)., vol. 20, no. 9, 2020, doi: 10.3390/s20092447.

[11] D. M. Pozar, “Microstrip Antennas,” Proc. IEEE, vol. 80, no. 1, pp. 79–91, 1992, doi: 10.1109/5.119568.

[12] N. W. Septiani et al., “No 主観的健康感を中心とした在宅高齢者における健康関連指標に関する共分散構造分析Title,” J. Sisfokom (Sistem Inf. dan Komputer), vol. 2, no. 2, pp. 39–43, 2017, [Online]. Available: http://ansitea.blogspot.com

[13] R. A. SMITH, “Antennas. John D. Kraus. New York: McGraw-Hill, 1950. 553 pp. $8.00,”Science, vol. 113, no. 2927. pp. 131–131, 1951. doi: 10.1126/science.113.2927.131.

[14] C. A. Balanis,“[ENG_C.A.Balanis]_Antenna.Theory.Analysis.and.Design_2ed_(Wiley_1997).pdf.” p. 249, 1997.

[15] T. Addepalli and V. R. Anitha, “A very compact and closely spaced circular shaped UWB MIMO antenna with improved isolation,” AEU - Int. J. Electron. Commun., vol. 114, p. 153016, 2020, doi: 10.1016/j.aeue.2019.153016.